Switch from the old self-built action to the official one.
We get:
- config managed inside the repo
- automatic upload when source file changes
- automatic invalidation if source string changes (tested)
- automatic download of new translation files
Tested both upload and download.
- Remove actions name where command is descriptive enough
- Use kebab-case instead of snake-case for step names
- Use shorter job names because to make PR checks more readable
- Remove duplicate `checks-backend`
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Co-authored-by: Yarden Shoham <git@yardenshoham.com>
Move drone cron pipelines to (GitHub) Actions. As these are mostly
compatible with Gitea Actions, when we start to dogfood, these will
already be migrated.
